package com.mzz.structure.facade;

/**
 *
 * @author xushijian
 * @date 18/6/6 下午4:59
 */
public class Disk {

    public void startup() {
        System.out.println("硬盘旋转");
    }

    public void shutdown() {
        System.out.println("硬盘停转");
    }
}
